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Reimplement trivially semiregular trait

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This commit is contained in:
Andrzej Krzemienski
2024-08-15 11:42:42 +02:00
parent 27309c40ad
commit 346dc03746
4 changed files with 65 additions and 88 deletions
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23
include/boost/optional/detail/experimental_traits.hpp
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@ -12,8 +12,6 @@
#ifndef BOOST_OPTIONAL_DETAIL_EXPERIMENTAL_TRAITS_04NOV2017_HPP
#define BOOST_OPTIONAL_DETAIL_EXPERIMENTAL_TRAITS_04NOV2017_HPP
#include <boost/config.hpp>
#include <boost/config/workaround.hpp>
#include <boost/type_traits.hpp>
// The condition to use POD implementation
@ -22,8 +20,6 @@
# define BOOST_OPTIONAL_DETAIL_NO_SPEC_FOR_TRIVIAL_TYPES
#elif defined BOOST_OPTIONAL_CONFIG_NO_SPEC_FOR_TRIVIAL_TYPES
# define BOOST_OPTIONAL_DETAIL_NO_SPEC_FOR_TRIVIAL_TYPES
#elif !defined BOOST_HAS_TRIVIAL_CONSTRUCTOR
# define BOOST_OPTIONAL_DETAIL_NO_SPEC_FOR_TRIVIAL_TYPES
#elif !defined BOOST_HAS_TRIVIAL_MOVE_ASSIGN
# define BOOST_OPTIONAL_DETAIL_NO_SPEC_FOR_TRIVIAL_TYPES
#elif !defined BOOST_HAS_TRIVIAL_MOVE_CONSTRUCTOR
@ -34,21 +30,6 @@
# define BOOST_OPTIONAL_DETAIL_NO_SPEC_FOR_TRIVIAL_TYPES
#elif !defined BOOST_HAS_TRIVIAL_DESTRUCTOR
# define BOOST_OPTIONAL_DETAIL_NO_SPEC_FOR_TRIVIAL_TYPES
#elif BOOST_WORKAROUND(BOOST_GCC, < 50000)
# define BOOST_OPTIONAL_DETAIL_NO_SPEC_FOR_TRIVIAL_TYPES
#endif
// GCC 5 or higher, or clang with libc++ or clang with libstdc++ 5 or higher
#if __cplusplus >= 201103L
# if BOOST_WORKAROUND(BOOST_GCC, >= 50000)
# define BOOST_OPTIONAL_DETAIL_USE_STD_TYPE_TRAITS
# elif (defined BOOST_CLANG)
# if BOOST_LIB_STD_CXX > 0
# define BOOST_OPTIONAL_DETAIL_USE_STD_TYPE_TRAITS
# elif BOOST_LIB_STD_GNU >= 441200023 && BOOST_LIB_STD_GNU != 450600023 && BOOST_LIB_STD_GNU != 450600026 && BOOST_LIB_STD_GNU != 460800003 && BOOST_LIB_STD_GNU != 450400026 && BOOST_LIB_STD_GNU != 460700026
# define BOOST_OPTIONAL_DETAIL_USE_STD_TYPE_TRAITS
# endif
# endif
#endif
@ -56,7 +37,7 @@ namespace boost { namespace optional_detail {
#ifndef BOOST_OPTIONAL_DETAIL_NO_SPEC_FOR_TRIVIAL_TYPES
template <typename T>
struct is_type_trivially_copyable
struct is_trivially_semiregular
: boost::conditional<(boost::has_trivial_copy_constructor<T>::value &&
boost::has_trivial_move_constructor<T>::value &&
boost::has_trivial_destructor<T>::value &&
@ -66,7 +47,7 @@ struct is_type_trivially_copyable
{};
#else
template <typename T>
struct is_type_trivially_copyable
struct is_trivially_semiregular
: boost::conditional<(boost::is_scalar<T>::value && !boost::is_const<T>::value && !boost::is_volatile<T>::value),
boost::true_type, boost::false_type>::type
{};

4
include/boost/optional/optional.hpp
View File

@ -22,10 +22,6 @@
#include <iosfwd>
#endif // BOOST_NO_IOSTREAM
#ifdef BOOST_OPTIONAL_DETAIL_USE_STD_TYPE_TRAITS
# include <type_traits>
#endif
#include <boost/assert.hpp>
#include <boost/core/addressof.hpp>
#include <boost/core/enable_if.hpp>